Device for bending and drying carriage poles and thills



(No Model.) v

W. D. PARKER.

DEVICE FOR BENDING AND DRYING CARRIAGE POLES AND'THILLS.

Patented Mar. 1, 1887.

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% ydb N. PETERS, Pholo-Lnhogmpher. Washington, D. c.

UNITED Smarts Parent Unmet;

WILLIS D. PARKER, OF DELPHI, INDIANA.

DEVICE FOR BENDING AND DRYING CARRIAGE POLES AND THlLLS.

SPECIFICATION forming part of Letters Patent No. 358,692, dated March 1,1887.

Application filed July 29, 1886. Serial No. 209.396. (No model.)

To all whom it may concern:

Be it known that I, WILLIs D. PARKER, of Delphi, in the county ofCarroll and State of Indiana, have invented new and useful Improvementsin Devices for Bending and Drying Carriage Poles and Thills; and I dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,which form a part of this specification.

This invention relates to new and useful improvements in devices forbending and drying carriage-poles and buggy-thills.

The object of my invention is to improve the manufacture ofcarriage-poles and buggy-thills by the use of the means hereinafterdescribed, whereby all the bends can be made, secured, and set at onesteaming of the timber, whereas by the means at present known and usedthe bends have to be made at different times and by detached appliances,resulting in defective work, as the timber thus treated cannot beprevented from twisting more or less out of shape.

To this end my invention consists in the construction, arrangement, andcombination of different parts, all as hereinafter described, andspecifically pointed out in the claims.

In the drawings whichaccompany this specification, Figure 1 is adetached transverse section of the form for bending the butt-ends. Fig.2 is a plan view of the whole device, and Fig. 3 is a longitudinalsection thereof.

A is a form for bending the butt-ends of thills and poles. It is made ofiron or other suitable material, and provided with an inclosed chamberfor heating it by steam for the purpose of drying the timber afterbending.-

The form has several compartments divided by partitions J J, there beingseven shown in the drawings; but the number may be greater or less.

B represents a thill forced into position in one of the compartments. Itshows a double bend,as commonly applied to thills and poles. WVhenasingle bend is required,the end of the timber is secured at the offset0, provided therefor.

D is a sleeve of iron or other suitable material slipped onto the buttof the timber for holding the ends of the metal straps E F, the

function of which is to bind the timber and prevent its fracture at thepoints subjected to great tensile strain.

hen a double bond of the butt is required, the first bend is produced byforcing the block G into the position shown in Fig. 1 by means of thelever H, which has for its fulcrum a rod, 1, running through all thepartitions J J. This rod is omitted in Fig. 2. When a single bend isrequired, or the second bend for a doublebent piece, the timber is heldin position by means of a shackle, K, lever L, and grip M.

The side bends of the thills are producedin the form N, made ofcast-iron or other suitable material, and heated at the places where thegreatest amount of bend is required by the admission of steam into thepassages O, which extend beneath across the whole breadth of the form.

The form N has the same number of compartments as the form A, and theframe which sustains it rests on rollers P P, so that it can be adjustedfor varying lengths of timber. The partitions Q, dividing thecompartments, are about two inches high, and the portionslt thereof aremade movable by being hinged or wedged fast. This is done for thegreater convenience of holding and releasing the timber and for varyingthe degree of side bend of the points of the thills. The latter are heldin position in the form by being shackled fast to the parts R in anysuitable manner.

Preparatory to bending, the timber is steamed in ,the ordinary way untilit is soft enough to avoid fracture, and then put into the forms andbent successively at the points desired, beginning at the butt-end. Thetimber being properly secured in the forms,it is submitted to theinfluence of heat,imparted by the steam admitted into the forms, for asufficient length of time until it has become dried and set to thedesired shape.

Any suitable means may be provided for holding the timber in the form N.I have shown a hook or link, T, which passes over the end of the timberand engages astaple, as seen in Fig. 2.

What I claim as my invention is- 1. The hollow steam-form A, formed withthe offset 0 substantially in the center of its length and projectinginto the steam-space of the form, combined with holding means upon eachside of said offset, whereby either a single or double bend maybeformed, as desired.

- 5 2. In a device for the purpose described, the

hollow steam-form A, formed with an offset, 0,

projecting into the steam-space of the form,

substantially in the center of its length, and

having a horizontal portion to support the end IQ of the timber, andprovided with reverse bends,

one upon each side of said offset, to receive and shape the timber,substantially as and for the purposes specified.

3. In a device for bending carriage-poles and r5 buggy-thil1s, the formA, provided with compartments for bending the butt-ends, in combinationwith theindependent longitudinallyadjustable form N, provided withcorresponding compartments for making the side bends, substantially asdescribed.

4. In a device for bending carriage-poles and buggy-thills, thecombination of the form A, having a series of compartments, eachprovided with the bends F E and offset 0, and the form N, havingcorresponding compartments pro- 25 vided with the side bends, Q R,substantially as described.

WILLIS D. PARKER.

Witnesses:

G. WV. JULIEN, I JOHN C. ODELL,

